#ifndef _item
#define _item
#include<iostream>
#include<conio.h>
#include<stdio.h>
using namespace std;
class item
{
private:
	double data;
public:
	item() : data(0.0){}
	void item::setdata(double value)
	{
		data = value;
	}
	double getdata()const{ return data; }
	void printdata()
	{
		cout << data;
	}
};
#endif